Radio apparatus



FIG. 1 is a perspective view of a radio apparatus showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a radio apparatus, as shown and described. 